Chau has had a number of diverse roles, playing Chinese, Japanese and even Hmong characters, most notably as Dr. Martin Ng in the American sci-fi series Gemini Division,[4] and as Dr. Pierre Chang in ABC'sLost.[5][6]

His latest projects have included a Syfy production, The Expanse, starring as Jules-Pierre Mao (3 episodes, 2015-2016) as Julie Mao's father. He has also appeared in the Disney Channel spy action comedy, K.C. Undercover, where he plays Zane, an evil villain who kidnaps K.C. and threatens to kill her family due to a checkered history with them.